Sketch of the event during the LBV phase, after maximum brightness and at late times (>120 d) together with the corresponding profiles of Hα. The LBV is embedded in a dense CSM indicated by the grey shaded area. During the LBV phase, only one absorption component is present while post maximum, after the emission starts to fade, a second component becomes visible in all emission lines which we therefore attribute to a shocked region associated to the shell ejection or SN explosion. At late times, the second component shows up in emission, either implying that the second shell has interacted with CSM (probably the earlier ejected shell) or that is has become optically thin.